OpenEdge Data Management: DataServer for Microsoft SQL Server
OpenEdge Data Management: DataServer for Microsoft SQL Server
OpenEdge Data Management: DataServer for Microsoft SQL Server
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Guidelines <strong>for</strong> using the <strong>Data</strong><strong>Server</strong><br />
Guidelines <strong>for</strong> using the <strong>Data</strong><strong>Server</strong><br />
<strong>OpenEdge</strong> database management system supports many capabilities not found in other database<br />
management systems, such as backward scrolling cursors and the ability to find the previous or<br />
last record in a table. The <strong>Data</strong><strong>Server</strong> supports these and other programming and database<br />
features to ensure that your applications work with both <strong>OpenEdge</strong> databases and MS <strong>SQL</strong><br />
<strong>Server</strong> databases.<br />
Some functionality highlights<br />
The <strong>Data</strong><strong>Server</strong> allows you to use ABL features as extensions to your data source. Some of the<br />
<strong>OpenEdge</strong> programming and database design techniques that you can implement on your MS<br />
<strong>SQL</strong> <strong>Server</strong> data source using the <strong>Data</strong><strong>Server</strong> are:<br />
• ROWID function<br />
• Arrays<br />
For access to some of these features, you might have to make minor modifications to how your<br />
MS <strong>SQL</strong> <strong>Server</strong> data-source or application is organized. For a discussion of these issues and<br />
instructions <strong>for</strong> modifying your data source, see Chapter 2, “Initial Programming<br />
Considerations.”<br />
If you create a MS <strong>SQL</strong> <strong>Server</strong> data source from an existing <strong>OpenEdge</strong> database with the<br />
<strong>OpenEdge</strong> DB to MS <strong>SQL</strong> <strong>Server</strong> migration utility and select the Create RECID Field option,<br />
you can use the FIND PREV/LAST statements in addition to taking advantage of <strong>OpenEdge</strong>-like<br />
cursor behavior.<br />
How you use the <strong>Data</strong><strong>Server</strong> depends on whether you plan to access in<strong>for</strong>mation in a data source<br />
through an <strong>OpenEdge</strong> application or migrate an <strong>OpenEdge</strong> database to a MS <strong>SQL</strong> <strong>Server</strong> data<br />
source. The following sections summarize.<br />
Using the <strong>Data</strong><strong>Server</strong> <strong>for</strong> MS <strong>SQL</strong> <strong>Server</strong> <strong>for</strong> the first time<br />
Be<strong>for</strong>e using the <strong>Data</strong><strong>Server</strong>, you must:<br />
1. Install the <strong>Data</strong><strong>Server</strong> modules on the machines your configuration requires.<br />
2. If you chose not to use the bundled ODBC driver, purchase and install the ODBC driver<br />
software on the machine that will execute the server component.<br />
3. Verify connectivity between ODBC and the MS <strong>SQL</strong> <strong>Server</strong> database.<br />
4. Create a local schema holder on the client or server machine, as appropriate. Schema<br />
holders cannot be transferred between different host machines.<br />
Chapter 3, “RDBMS Stored Procedure Details,” provides in<strong>for</strong>mation about where to install<br />
<strong>Data</strong><strong>Server</strong> modules and how to create a schema holder.<br />
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